Pulp beating or refining machine



July 14, 1931. T. D. NUTTALL PULP BEATING OR REFINING MACHINE Filed April 25, 1930 lqlldl ...WWI Mllull lorlllollll Patented vJuly 1 4, 1931 UNITED STATES ATENT OFFICE THOMAS DOWNHAM NUTTALL, OF BURY, ENGLAND, ASSIGNOR OF- ONE-HALF TO BENT- LEY @a JACKSON LIMITED, OF BURY, ENGLAND, A BRITISH COMPANY PLULP BEATING OR REFINING MACHINE Application filed April 23, 1930, Serial No. 446,707, and in Great Britain 'May 21, 1929.'

This invention relates to beating or refining machines for the pulp used in paper making, and particularly to machines of the Jordan or similar type in which the grinding pressure between blades upon a revolving cone and a fixedl conical casing or housing around said cone is obtained by relative a-xial adjustments of the said parts.

The object of my present invention is to provide in a ready and eiiicient manner for the opening out of the conical casing or housing so as to permit of the removal of the revolving' cone and the examination or renewal of the blades 'u on the casing and cone, the arrangement acilitating also the resetting of the casing if and when desired with the part which has formed-the upper half thereof, as the lower half so as to equalize the wear of the blades upon thevtwo halves in the known manner.

-The invention comprises the division of the conical casing or housing axially into two similar halves or sections with the abutting parts of the' two halves diametrically opposite to one another extended radially outwards and supported upon pedestals or brackets forming also retaining guides therefor during adjustment movements.

Referring to the accompanying sheet of explanatory drawings Figure 1 is a front eleva-tion of a pulp beating or refining machine constructed in one convenient form in accordance with my invention. I

Figure 2 is partly an end elevation and partly a sectional end elevation on the line AAB of Figure 3 of the beating or refining machine casing.

Figure 3 is a plan view of the machine casing.

The same reference letters in the diiferent -views indicate the same parts.

they are traversed when adjustment of the casing relatively to the revolving cone within it driven by themotor z, is being eii'ected. As the division of the casing is on a dia-l metral plane, either portion of the casing can be placed in the top or in the bottom position, and the extended abutting parts be secured in the guides.

My improved construction of casing is neat in appearance and eiflcient in service. The means for traversing the casing axially may be of any suitable type and do not form parts of the present invention. In Figure l, a hand wheel z' is shown, this rotates two worms driving two worm wheels, one of which is shown at j. nuts and are restrained from axial move* ment so that when rotated they traverse bolts passing therethrough, (one of which is shown at la) attached at diametrically opposite points to the end cover m of the casing. Y

What I claim is In pulp beating or refining machines of the type specified, the division of the conical casing or housing axially into top and bottom' similar halves or sections having radial flanges at diametri'cally opposite points for bolting together, fixed pedestals or brackets supporting said casing by said bolted flanges, said pedestals or brackets forming guides for the casing during axial adjustment movements, and means for adjusting the casing along said guides.

In testimony whereof I have signed my name to this specilication.

THOMAS DOWNHAM N UTTALL.

Such wheels act as4 

